gateway: degrade error in gateway to log to reduce noise

It logs all errors including expired IPNS keys and other non important
errors.

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

core/corehttp/gateway_handler.go

@@ -506,7 +506,7 @@ func webError(w http.ResponseWriter, message string, err error, defaultCode int)
 
 func webErrorWithCode(w http.ResponseWriter, message string, err error, code int) {
 	w.WriteHeader(code)
-	log.Errorf("%s: %s", message, err) // TODO(cryptix): log errors until we have a better way to expose these (counter metrics maybe)
+	log.Infof("%s: %s", message, err) // TODO(cryptix): log until we have a better way to expose these (counter metrics maybe)
 	fmt.Fprintf(w, "%s: %s", message, err)
 }